sicknesssickness" is something which is the concept of a condition that is the ill health state of a person whose body is not in sound condition or the condition of being ill.last updated 28 Feb 2015 http://en.wikipedia.org/wiki/Sickness_behaviorlast updated 28 Feb 2015
sideAn abstract concept of a border of the boundary of something that is the edge or extremity of something.last updated 15 Apr 2015 http://en.wikipedia.org/wiki/Edge_%28geometry%29last updated 15 Apr 2015
siliconas modifier using or relating to the abstract concept of silicon.last updated 07 Jan 2016 http://en.wikipedia.org/wiki/Siliconlast updated 16 Feb 2015
single-parent familyA concept of family that a child or children has either father or mother but not both to live with.last updated 20 Feb 2015 http://en.wikipedia.org/wiki/Single_parentlast updated 20 Feb 2015
slaveryslavery" is something which is the concept of a civil relationship that is the condition when a person is fully control by another person with absolute power or the state of being a slave.last updated 27 Feb 2015 http://en.wikipedia.org/wiki/Slaverylast updated 27 Feb 2015
sleepsleep" is something which is the concept of a condition that is the resting or natural state of a person whose body is not active and the mind is unconscious or the state of sleeping.last updated 27 Feb 2015 http://en.wikipedia.org/wiki/Sleeplast updated 27 Feb 2015
solid figureAn abstract concept of a three dimensional geometric figure that is the geometric form of an object bounded by any boundary or boundaries in three dmensional space.last updated 16 Apr 2015 http://en.wikipedia.org/wiki/Solid_geometrylast updated 16 Apr 2015
space explorationThe concept of scientific study of the Universe that is the ongoing investigation and discovery of celestial structures in outer space by means of the available space technology.last updated 14 Apr 2015 http://en.wikipedia.org/wiki/Space_explorationlast updated 14 Apr 2015
sphereAn abstract concept of a three dimensional geometric figure that is the geometric form of an solid object bounded by one surface boundaries or sides obtained by turning a semicircle a full 360 degree rotation with the diameter as the rotating axis in three dmensional space.last updated 17 Apr 2015 http://en.wikipedia.org/wiki/Spherelast updated 17 Apr 2015
squareAn abstract concept of a two dimensional geometric figure that is a plane shape with four straight sides of equal length forming four internal right angles to each other.last updated 15 Apr 2015 http://en.wikipedia.org/wiki/Squarelast updated 15 Apr 2015
steelas modifier using or relating to the abstract concept of steellast updated 07 Jan 2016 https://en.wikipedia.org/wiki/Steellast updated 22 Dec 2015
straight lineAn abstract concept of a one dimensional geometric thing that is a straight continuous extent of length with no breadth and thickness.last updated 15 Apr 2015 http://en.wikipedia.org/wiki/Line_%28geometry%29last updated 15 Apr 2015